In Japan and Korea, the term "skinship" is used to describe the intimacy, or closeness, between a mother and a child. Today, the word is generally used for bonding through physical contact, such as holding hands, hugging, or parents washing their child at a bath. The earliest citation of this word appears in Nihon Kokugo Daijiten in 1971. (from Wikipedia)
One of the more confusing waseigo/engrish words.

A friendship or relationship that primarily focuses on the exploration of another's skin.

This word's origin is from Korea. Many Koreans learn English from a very young age, so a combination of the two languages was inevitable. The bastard child of these two noble languages is "Konglish."

Korean Teen #1: We must have skinship, so that we can be ready for marriage.
Draper Teacher: Are you kidding me? What in the blue hell is skinship?
Korean Teen #2: (after furiously thumbing through a korean-english dictionary) A representation of affection!

In Korea, the term "skinship" is used to describe the act of intimate, non-sexual touching between very close (Usually same-sex, but can include both genders.) platonic friends. It involves acts such as holding hands/arms, hugging, and kissing on the cheeks.

Sometimes it goes even deeper than that and can even involve bathing together, as Koreans (And the Japanese) believe that group nudity helps break down the barriers and helps establish a closer relationship.

It's not unusual to see Koreans walking and holding hands with each other, even if they're not in a relationship. That just means that they have a deep skinship with each other.

disturbingly intimate physical skin-to-skin contact among adolescent boys in Japan. The word originally developed to describe intimate physical contact between a mother and her baby, however more recently it has also come to describe the phenomenon of male groping, grooming, and cuddling which many young boys participate in. Skinship is usually practiced from late childhood through puberty among boys only.

(a new English teacher in Japan working in a junior high school) ''Man, I went into one of my classes today, and this one boy was sitting on the lap of another one right there and he had his one hand in his half-buttoned down shirt feeling up the other boys chest, and with the other hand he was playing with the other boys hair. Both of them seemed fine with it, and nobody else seemed to care at all. And I knew both of the kids have girlfriends because I talk to them after class. It was so weird...''

(a veteran English teacher) ''It's called 'skinship.' I don't know why, but they all love that shit over here.''